An approach to obtain Heat Integration scheme with higher viability for complex system

Focused on the problem of low viability of Heat Integration (HI) scheme for complex system, a strategy and a method of hierarchical Heat Integration (HHI) were proposed in this paper. The practical limitations and energy target were combined stage by stage to determine the number of hierarchy and the optimal HI scheme in HHI method. The coproduction system, which can produce the syngas, semicoke and light oil, was selected as the study case. Based on the proposed method, HI of coproduction system was performed from different hierarchies. During the partition of coproduction system, the practical limitations were considered stage by stage, and HI of that system was investigated from different hierarchies. The optimal HHI scheme with higher viability and its energy saving ratio were achieved. The case study indicates that HHI method can work better for the HI complex system. The interior energy saving potential of complex system is revealed accurately by HHI, and the technical viability can be assured in the late implementation process of HI scheme.

[1]  Yiping Dai,et al.  Thermodynamic analysis and optimization of an ammonia-water power system with LNG (liquefied natural gas) as its heat sink , 2013 .

[2]  Ljubica Matijašević,et al.  Energy recovery by pinch technology , 2002 .

[3]  Marian Trafczynski,et al.  Handbook of Process Integration (PI). Minimisation of Energy and Water Use, Waste and Emissions , 2015 .

[4]  Jiří Jaromír Klemeš,et al.  Industrial implementation issues of Total Site Heat Integration , 2013 .

[5]  Patrick Linke,et al.  Optimal waste heat recovery and reuse in industrial zones , 2011 .

[6]  Jiří Jaromír Klemeš,et al.  Total Site Heat Integration Targeting Algorithm Incorporating Plant Layout Issues , 2014 .

[7]  S. Tanaka,et al.  Energy saving study on a large steel plant by total site based pinch technology , 2011 .

[8]  S. Ahmad,et al.  Heat recovery between areas of integrity , 1991 .

[9]  François Maréchal,et al.  Energy Integration of Large-scale Industrial Sites with Target-compatible Sub-system Division Strategy , 2014 .

[10]  Martin Kumar Patel,et al.  Approximation of theoretical energy-saving potentials for the petrochemical industry using energy balances for 68 key processes , 2007 .

[11]  Lili Zuo,et al.  Predicting energy consumption of multiproduct pipeline using artificial neural networks , 2014 .

[12]  Simon Harvey,et al.  Targeting for energy efficiency and improved energy collaboration between different companies using , 2011 .

[13]  Jiří Jaromír Klemeš,et al.  Minimisation of a heat exchanger networks' cost over its lifetime , 2012 .

[14]  Jiří Jaromír Klemeš,et al.  Total Site targeting with process specific minimum temperature difference (ΔTmin) , 2012 .

[15]  Gade Pandu Rangaiah,et al.  Improved heat exchanger network retrofitting using exchanger reassignment strategies and multi-objective optimization , 2014 .

[16]  Igor Bulatov,et al.  Sustainability in the Process Industry: Integration and Optimization , 2010 .

[17]  Masaru Ishida.  Hierarchical Structure Analysis Based on Energy and Exergy Transformation of a Process System , 1983 .

[18]  Helmut Körner.  Optimaler Energieeinsatz in der Chemischen Industrie , 1988 .

[19]  Xiaohui Chen,et al.  Energy analysis for low-rank coal based process system to co-produce semicoke, syngas and light oil , 2013 .

[20]  Paul Serban Agachi,et al.  Review: Important contributions in development and improvement of the heat integration techniques , 2010, Comput. Chem. Eng..

[21]  François Maréchal,et al.  Energy integration of industrial sites with heat exchange restrictions , 2012, Comput. Chem. Eng..